Sorry you were having mouse problems... I think maybe the mouse acceleration I built in may be interacting with YOUR OS mouse acceleration? I watched your vid though, and at least one of those times the mouse jumped was a feature : ) ...the camera wanted you to look down at the red button clue, but you were already on your way down the ramp, so the game wrenched your camera 180 degrees, woops! You can always turn the sensitivity down in the game (main menu > options) to the lowest. Glad you liked it otherwise! Thanks for the playthrough!
I actually didn't though about the mouse acceleration, but after further inspection i've take a look in my Razer Synapse and i have it turned off.
Maybe the mouse was having a bad day lol. Thanx for the game, looking forward for more projects from you!